Psalms 126:5 - Ellicott's Commentary On The Whole Bible

Joy. — Rather, singing, as in Psalms 126:2. The harvest-home songs are contrasted with the anxiety of the seed-time. Probably the poet found the proverbial saying already current, but he has touched it with the consecrating hand till it has become only less precious than the saying of Divine lips, “Blessed are they that mourn, for they shall be comforted.”